ASP.NET Core Authentication认证实现方法_实用技巧_

 public void ConfigureServices(IServiceCollection services) { services.AddAuthentication(authOpt => { authOpt.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme; authOpt.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme; }) .AddJwtBearer(o => { o.TokenValidationParameters = new TokenValidationParameters { //配置自己所要验证的参数 }; }); }

 public static class AuthenticationServiceCollectionExtensions { public static AuthenticationBuilder AddAuthentication( this IServiceCollection services, Action configureOptions) { if (services == null) throw new ArgumentNullException(nameof (services)); if (configureOptions == null) throw new ArgumentNullException(nameof (configureOptions)); AuthenticationBuilder authenticationBuilder = services.AddAuthentication(); services.Configure(configureOptions); return authenticationBuilder; } public static AuthenticationBuilder AddAuthentication( this IServiceCollection services) { if (services == null) throw new ArgumentNullException(nameof (services)); services.AddAuthenticationCore(); services.AddDataProtection(); services.AddWebEncoders(); services.TryAddSingleton(); return new AuthenticationBuilder(services); } public static AuthenticationBuilder AddAuthentication( this IServiceCollection services, string defaultScheme) { return services.AddAuthentication((Action) (o => o.DefaultScheme = defaultScheme)); } ..... }

 public static class AuthenticationCoreServiceCollectionExtensions { /// 
 /// Add core authentication services needed for . /// 
 public static IServiceCollection AddAuthenticationCore( this IServiceCollection services) { if (services == null) throw new ArgumentNullException(nameof (services)); services.TryAddScoped(); services.TryAddSingleton(); services.TryAddScoped(); services.TryAddSingleton(); return services; } /// 
 /// Add core authentication services needed for . /// 
 public static IServiceCollection AddAuthenticationCore( this IServiceCollection services, Action configureOptions) { if (services == null) throw new ArgumentNullException(nameof (services)); if (configureOptions == null) throw new ArgumentNullException(nameof (configureOptions)); services.AddAuthenticationCore(); services.Configure(configureOptions); return services; } }

 public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) { ... app.UseAuthentication(); ... } 　public static class AuthAppBuilderExtensions { public static IApplicationBuilder UseAuthentication( this IApplicationBuilder app) { if (app == null) throw new ArgumentNullException(nameof (app)); return app.UseMiddleware(); } }

 public class AuthenticationMiddleware { private readonly RequestDelegate _next; public AuthenticationMiddleware(RequestDelegate next, IAuthenticationSchemeProvider schemes) { if (next == null) throw new ArgumentNullException(nameof (next)); if (schemes == null) throw new ArgumentNullException(nameof (schemes)); this._next = next; this.Schemes = schemes; } public IAuthenticationSchemeProvider Schemes { get; set; } public async Task Invoke(HttpContext context) { context.Features.Set((IAuthenticationFeature) new AuthenticationFeature() { OriginalPath = context.Request.Path, OriginalPathBase = context.Request.PathBase }); IAuthenticationHandlerProvider handlers = context.RequestServices.GetRequiredService(); foreach (AuthenticationScheme authenticationScheme in await this.Schemes.GetRequestHandlerSchemesAsync()) { IAuthenticationRequestHandler handlerAsync = await handlers.GetHandlerAsync(context, authenticationScheme.Name) as IAuthenticationRequestHandler; bool flag = handlerAsync != null; if (flag) flag = await handlerAsync.HandleRequestAsync(); if (flag) return; } AuthenticationScheme authenticateSchemeAsync = await this.Schemes.GetDefaultAuthenticateSchemeAsync(); if (authenticateSchemeAsync != null) { AuthenticateResult authenticateResult = await context.AuthenticateAsync(authenticateSchemeAsync.Name);　　//实际的认证业务 if (authenticateResult?.Principal != null) context.User = authenticateResult.Principal; } await this._next(context); } }

 public virtual AuthenticationBuilder AddScheme( string authenticationScheme, string displayName, Action configureOptions) where TOptions : AuthenticationSchemeOptions, new() where THandler : AuthenticationHandler { return this.AddSchemeHelper(authenticationScheme, displayName, configureOptions); } private AuthenticationBuilder AddSchemeHelper( string authenticationScheme, string displayName, Action configureOptions) where TOptions : class, new() where THandler : class, IAuthenticationHandler { this.Services.Configure((Action) (o => o.AddScheme(authenticationScheme, (Action) (scheme => { scheme.HandlerType = typeof (THandler); scheme.DisplayName = displayName; })))); if (configureOptions != null) this.Services.Configure(authenticationScheme, configureOptions); this.Services.AddTransient(); return this; }

 public class AuthenticationScheme { /// 
Constructor.
 public AuthenticationScheme(string name, string displayName, Type handlerType) { if (name == null) throw new ArgumentNullException(nameof (name)); if (handlerType == (Type) null) throw new ArgumentNullException(nameof (handlerType)); if (!typeof (IAuthenticationHandler).IsAssignableFrom(handlerType)) throw new ArgumentException("handlerType must implement IAuthenticationHandler."); this.Name = name; this.HandlerType = handlerType; this.DisplayName = displayName; } /// 
The name of the authentication scheme.
 public string Name { get; } /// 
 /// The display name for the scheme. Null is valid and used for non user facing schemes. /// 
 public string DisplayName { get; } /// 
 /// The  type that handles this scheme. /// 
 public Type HandlerType { get; } }

 　　public virtual Task> GetRequestHandlerSchemesAsync() { return Task.FromResult>((IEnumerable) this._requestHandlers); }

 public class AuthenticationSchemeProvider : IAuthenticationSchemeProvider { private readonly object _lock = new object(); private readonly AuthenticationOptions _options; private readonly IDictionary _schemes; private readonly List _requestHandlers; /// 
 /// Creates an instan
                
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